I would have to say whatever u prefer, the only thing is wet might be more costly, but it depends on how much of a shot u want. the more the shot the more harm or chance of engine damage. wet or dry its all about how much of a pill u want in it, which can be adjusted 2.3vtec should be able to flow really good. so it depends on mileage. I would go for a 50-150 shot, and put a 75 shot pill in it.